A while ago I built a telegraph machine and was amazed by the simplicity and the joy obtained from pounding out my name hundreds of times. When I saw that the weekly challenge was magnet themed, I knew that I had to make an instructable. I was able to build it in an hour while taking pictures, and I bet it could be done in about 30 minutes. Telegraphs are simple communication devices using a switch operated at one station to control a electromagnet at a separate telegraph station. The electromagnet then will pull down a piece of steel for a short time or a longer time (dot or dash). It was used in the U.S. civil war and as used as a major communication device from the early 1800's until the mid 1900's. Now let's go make one!
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Signing UpStep 1: Materials
These Items can be found in any workshop or hardware store and are pretty basic:
Scrap wood (Plywood and a board about 3 inches high)
A nail a little taller than your board of wood
Some sheet steel (thin)
Copper sheet
Bottle cap
Insulated or magnet wire
9v battery and holder
assorted nails and screws
Tools:
Hammer
Screwdriver
Drill
Saw (If you need to cut the wood)
Scrap wood (Plywood and a board about 3 inches high)
A nail a little taller than your board of wood
Some sheet steel (thin)
Copper sheet
Bottle cap
Insulated or magnet wire
9v battery and holder
assorted nails and screws
Tools:
Hammer
Screwdriver
Drill
Saw (If you need to cut the wood)
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But then you have to Found it's Frequency... Its a hard work.